:root {
  --blue: #1677ff;
  --cyan: #00c2ff;
  --text: #0b1b3a;
  --muted: #6b7a90;
  --line: #dcebff;
  --soft: #f7faff;
  --shadow: 0 24px 70px rgba(22, 119, 255, 0.1);
}
* { box-sizing: border-box; }
html { scroll-behavior: auto; }
body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 8%, rgba(0, 194, 255, 0.12), transparent 28%),
    radial-gradient(circle at 90% 20%, rgba(22, 119, 255, 0.1), transparent 30%),
    linear-gradient(180deg, #ffffff 0%, #f7faff 100%);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.7;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  opacity: 0.38;
  background-image:
    linear-gradient(rgba(106, 168, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(106, 168, 255, 0.08) 1px, transparent 1px);
  background-size: 68px 68px;
  mask-image: linear-gradient(180deg, #000 0%, transparent 72%);
}
a { color: inherit; text-decoration: none; }
button { border: 0; padding: 0; font: inherit; cursor: pointer; background: transparent; }
img { display: block; max-width: 100%; }
.container { width: min(calc(100% - 48px), 1440px); margin: 0 auto; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(220, 235, 255, 0.84);
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(18px);
}
.nav {
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.brand img {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  box-shadow: 0 14px 32px rgba(22, 119, 255, 0.16);
}
.brand strong {
  display: block;
  color: transparent;
  background: linear-gradient(105deg, #071a3b 0%, #1677ff 55%, #00aaf2 100%);
  -webkit-background-clip: text;
  background-clip: text;
  font-size: 20px;
  line-height: 1.08;
  font-weight: 880;
}
.brand small {
  display: block;
  margin-top: 3px;
  color: #53667f;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.16em;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 42px;
  color: #42516a;
  font-size: 15px;
  font-weight: 760;
}
.nav-links a:first-child { color: var(--blue); }
.hero {
  padding: 92px 0 48px;
  text-align: center;
}
.eyebrow {
  margin: 0 0 14px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 820;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
h1 {
  margin: 0;
  font-size: clamp(42px, 6vw, 82px);
  line-height: 1.05;
  font-weight: 900;
  letter-spacing: 0;
}
.hero p:not(.eyebrow) {
  max-width: 820px;
  margin: 24px auto 0;
  color: var(--muted);
  font-size: 18px;
}
.case-list {
  display: grid;
  gap: 26px;
  padding: 42px 0 96px;
}
.case-row {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(360px, 0.78fr);
  gap: 30px;
  align-items: center;
  padding: 30px;
  border: 1px solid rgba(106, 168, 255, 0.18);
  border-radius: 30px;
  background:
    radial-gradient(circle at 0% 0%, rgba(0, 194, 255, 0.08), transparent 28%),
    rgba(255, 255, 255, 0.82);
  box-shadow: var(--shadow);
}
.case-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}
.case-no {
  color: transparent;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  font-size: 18px;
  font-weight: 900;
}
.industry {
  display: inline-flex;
  min-height: 32px;
  align-items: center;
  padding: 0 13px;
  border: 1px solid rgba(22, 119, 255, 0.16);
  border-radius: 999px;
  color: var(--blue);
  background: rgba(234, 244, 255, 0.8);
  font-size: 13px;
  font-weight: 800;
}
.case-row h2,
.detail-title {
  margin: 0;
  font-size: clamp(26px, 3vw, 42px);
  line-height: 1.18;
  font-weight: 880;
}
.case-row p,
.detail-intro {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 17px;
}
.case-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}
.btn {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border-radius: 999px;
  color: #fff;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  font-weight: 800;
  box-shadow: 0 14px 30px rgba(22, 119, 255, 0.18);
}
.btn.secondary {
  color: var(--blue);
  border: 1px solid rgba(22, 119, 255, 0.2);
  background: rgba(255, 255, 255, 0.72);
  box-shadow: none;
}
.image-card {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(106, 168, 255, 0.18);
  border-radius: 0;
  background: #fff;
  box-shadow: 0 20px 54px rgba(22, 119, 255, 0.1);
}
.image-card img {
  width: 100%;
  height: auto;
  border-radius: 0;
}
.image-card::after {
  content: "点击放大";
  position: absolute;
  right: 14px;
  bottom: 14px;
  padding: 7px 12px;
  border-radius: 999px;
  color: var(--blue);
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 10px 24px rgba(22, 119, 255, 0.12);
  font-size: 12px;
  font-weight: 800;
}
.detail-hero {
  padding: 72px 0 38px;
}
.detail-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: end;
}
.detail-panel {
  margin: 28px auto 96px;
  padding: 28px;
  border: 1px solid rgba(106, 168, 255, 0.18);
  border-radius: 30px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: var(--shadow);
}
.detail-image img {
  width: 100%;
  border-radius: 0;
}
.modal {
  position: fixed;
  inset: 0;
  z-index: 99;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 28px;
  background: rgba(7, 18, 42, 0.78);
}
.modal.is-open { display: flex; }
.modal img {
  max-width: min(96vw, 1680px);
  max-height: 92vh;
  border-radius: 0;
  background: #fff;
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.24);
}
.modal-close {
  position: fixed;
  top: 22px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  color: var(--text);
  background: #fff;
  font-size: 24px;
  line-height: 1;
}
.site-footer {
  padding: 34px 0;
  border-top: 1px solid rgba(220, 235, 255, 0.84);
  color: var(--muted);
  background: rgba(255, 255, 255, 0.72);
  text-align: center;
}
@media (max-width: 992px) {
  .nav-links { display: none; }
  .case-row { grid-template-columns: 1fr; }
  .detail-head { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .container { width: min(calc(100% - 28px), 1440px); }
  .nav { height: auto; padding: 16px 0; }
  .brand img { width: 42px; height: 42px; }
  .brand strong { font-size: 17px; }
  .brand small { display: none; }
  .hero { padding-top: 58px; }
  .case-row, .detail-panel { padding: 18px; border-radius: 22px; }
}